org.extex.font.format.xtf.tables
Class OtfTableCFF

java.lang.Object
  org.extex.font.format.xtf.tables.AbstractXtfTable
      org.extex.font.format.xtf.tables.OtfTableCFF

All Implemented Interfaces:

XtfGlyphName, XtfTable, XMLWriterConvertible

public class OtfTableCFF
extends AbstractXtfTable
implements XtfTable, XMLWriterConvertible

The 'CFF' - PostScript font program.

This table contains a compact representation of a PostScript Type 1, or CIDFont and is structured according to Adobe Technical Note #5176: " The Compact BaseFont Format Specification" and Adobe Technical Note #5177: "Type 2 Charstring Format".

CFF Data Types

Name	Range	Description
Card8	0 255	1-byte unsigned number
Card16	0 65535	2-byte unsigned number
Offset	varies	1, 2, 3, or 4 byte offset (specified by OffSize field)
OffSize	1 - 4	1-byte unsigned number specifies the size of an Offset field or fields
SID	0 - 64999	2-byte string identifier

CFF Data Layout

Entry	Comments
Header	-
Name INDEX	-
Top DICT INDEX	-
String INDEX	->/td>
Global Subr INDEX	-
Encodings	-
Charsets	-
FDSelect	CIDFonts only
CharStrings INDEX	per-font
BaseFont DICT INDEX	per-font, CIDFonts only
Private DICT	per-font
Local Subr INDEX	per-font or per-Private DICT for CIDFonts
Copyright and Trademark Notices	-/td>

Version:

$Revision: 6748 $

Author:

Michael Niedermair

Constructor Summary

OtfTableCFF(XtfTableMap tablemap, XtfTableDirectory.Entry de, RandomAccessR rar)
Create a new object

Method Summary

CffFont	getFont(int number) Returns the font.
int	getHdrSize() Returns the hdrSize.
int	getNumGlyphs() Returns the number of glyphs
java.lang.String	getShortcut() Returns the table shortcut.
java.lang.String	getStringIndex(int sid) Returns the String for the SID.
int	getType() Get the table type, as a table directory value.
int	getVersionmajor() Returns the version major.
int	getVersionminor() Returns the version minor.
int	mapGlyphNameToGlyphPos(java.lang.String glyphname, int fontnumber) Map the glyph name to the glyph position.
java.lang.String	mapGlyphPosToGlyphName(int glyphpos, int fontnumber) Map the glyph position to the name of the glyph.
byte[]	readDataFromIndex(int start, int end, RandomAccessR rar) An INDEX is an array of variable-sized objects.
int[]	readOffsets(RandomAccessR rar) Read the offsets.
void	writeXML(XMLStreamWriter writer) Write the data to a XMLStreamWriter.

Methods inherited from class org.extex.font.format.xtf.tables.AbstractXtfTable

getGlyphName, getInitOrder, getTableMap, init, writeStartElement

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.extex.font.format.xtf.tables.XtfTable

getInitOrder, getTableMap, init

Constructor Detail

OtfTableCFF

public OtfTableCFF(XtfTableMap tablemap,
                   XtfTableDirectory.Entry de,
                   RandomAccessR rar)
            throws java.io.IOException

Create a new object

Parameters:

tablemap - the table map

de - entry

rar - input

Throws:

java.io.IOException - if an IO-error occurs

Method Detail

getFont

public CffFont getFont(int number)

Returns the font.

Parameters:

number - The font numer.

Returns:

Returns the font.

getHdrSize

public int getHdrSize()

Returns the hdrSize.

Returns:

Returns the hdrSize.

getNumGlyphs

public int getNumGlyphs()

Returns the number of glyphs

Returns:

Returns the number of glyphs

getShortcut

public java.lang.String getShortcut()

Description copied from interface: XtfTable

Returns the table shortcut.

Specified by:

getShortcut in interface XtfTable

Returns:

Returns the table shortcut.

See Also:

XtfTable.getShortcut()

getStringIndex

public java.lang.String getStringIndex(int sid)

Returns the String for the SID. First, test if SID is in standard range then fetch from internal table, otherwise, fetch string from the String INDEX using a value of (SID-nStdStrings) as the index.

Parameters:

sid - the SID for the string.

Returns:

Returns the String or null, if not found.

getType

public int getType()

Get the table type, as a table directory value.

Specified by:

getType in interface XtfTable

Returns:

Returns the table type

getVersionmajor

public int getVersionmajor()

Returns the version major.

Returns:

Returns the version major.

getVersionminor

public int getVersionminor()

Returns the version minor.

Returns:

Returns the version minor.

mapGlyphNameToGlyphPos

public int mapGlyphNameToGlyphPos(java.lang.String glyphname,
                                  int fontnumber)

Map the glyph name to the glyph position. If the glyph name not found, -1 is returned.

Parameters:

glyphname - The glyph name

fontnumber - The fontnumber.

Returns:

Returns the position of the glyph name.

mapGlyphPosToGlyphName

public java.lang.String mapGlyphPosToGlyphName(int glyphpos,
                                               int fontnumber)

Map the glyph position to the name of the glyph.

Parameters:

glyphpos - The glyph position

fontnumber - The font number.

Returns:

Returns the name of the glpyh or null, if not found.

readDataFromIndex

public byte[] readDataFromIndex(int start,
                                int end,
                                RandomAccessR rar)
                         throws java.io.IOException

An INDEX is an array of variable-sized objects.

It comprises a header, an offset array, and object data. The offset array specifies offsets within the object data. An object is retrieved by indexing the offset array and fetching the object at the specified offset. The object's length can be determined by subtracting its offset from the next offset in the offset array. An additional offset is added at the end of the offset array so the length of the last object may be determined.

Type	Name	Description
Card16	count	Number of objects stored in INDEX. An empty INDEX is represented by a count field with a 0 value and no additional fields. Thus, the total size of an empty INDEX is 2 bytes.
OffSize	offSize	Offset array element size
Offset	offset [count+1]	Offset array (from byte preceding object data). Offsets in the offset array are relative to the byte that precedes the object data. Therefore the first element of the offset array is always 1. (This ensures that every object has a corresponding offset which is always nonzero and permits the efficient implementation of dynamic object loading.)
Card8	data [<varies>]	Object data

Offsets in the offset array are relative to the byte that precedes the object data. Therefore the first element of the offset array is always 1. (This ensures that every object has a corresponding offset which is always nonzero and permits the efficient implementation of dynamic object loading.) An empty INDEX is represented by a count field with a 0 value and no additional fields. Thus, the total size of an empty INDEX is 2 bytes.

Parameters:

start - the start offset

end - the end offset

rar - the input

Returns:

Returns the data

Throws:

java.io.IOException - if an IO-error occurs

readOffsets

public int[] readOffsets(RandomAccessR rar)
                  throws java.io.IOException

Read the offsets.

Parameters:

rar - The input.

Returns:

Returns the offsets.

Throws:

java.io.IOException - if a IO-error occurred.

writeXML

public void writeXML(XMLStreamWriter writer)
              throws java.io.IOException

Description copied from interface: XMLWriterConvertible

Write the data to a XMLStreamWriter.

Specified by:

writeXML in interface XMLWriterConvertible

Parameters:

writer - the XML-Writer

Throws:

java.io.IOException - if an IO-error occurs.

See Also:

XMLWriterConvertible.writeXML( org.extex.util.xml.XMLStreamWriter)